Beth Reinhard: “Though championing immigration reform is widely viewed as a political gamble for Republican Sen. Marco Rubio, it hasn't stalled his rapidly churning fundraising machine. A spokesman for the first-term senator from Florida said Monday that his reelection campaign, leadership committee, and a newly created joint fundraising committee collected $2.28 million in the past three months. During that time, Rubio has been the most prominent face of the immigration-reform talks on Capitol Hill, which are expected to produce legislation Tuesday.”

Politico: “The two lawmakers are expected to meet with President Barack Obama to discuss their proposal, which includes a path to citizenship for undocumented immigrants already in the country and tougher border control. An event announcing the legislation has been postponed out of respect for the Monday explosions at the Boston Marathon.”

AP: “Republican opposition is growing to a bipartisan Senate plan for expanding background checks for firearms buyers, enough to put the proposal’s fate in jeopardy. But the measure may change as both sides compete for support in one of the pivotal fights in the battle over curbing guns.”

AP: “It’s a political role reversal: Republicans are blasting a plan by President Barack Obama to consider selling the Tennessee Valley Authority, a New Deal-era agency long targeted by conservatives as an example of government overreach.”